Does this mean my crush is interested in me?

Recently, I met my crush during a leadership seminar, and I was so excited during the class to have met her. Luck was on my side and she became grouped with me with 5 other guys and 1 girl. I kept to myself, - I didn't approach her to talk, neither did I show any interest in her whatsoever. She was my crush, but I was too shy. Way too shy. Suddenly she came to me, and asked me to introduce myself and talked to me for like, an hour. She seemed to be genuinely interested in me. After the seminar, she followed me as we exited the college campus and eventually she joined me for super. We continued talking, and finally she asked me which girl I'm currently having a crush on. I refused to say, because it's her - and I don't want to straight up confess or I could creep her out inevitably. She continued to pester me for like 45 minutes, repeatedly asking me who the girl is, demanding an answer. I never told her and eventually, she gave up - and told me she'll try her best to find out who that girl is (ironically it's her). A day later, she came to me first thing in the morning and told me to spit the information. Still, I didn't want to, in fear she'll be creeped out. She told me she didn't have a crush on her own and her last boyfriend was years ago. Then, things became rather awkward. She actually took my iPhone, my wallet and my iPod hostage for 3 hours until I tell her who that girl is. I persisted to keep my inner most secret, and so I lied about liking this other girl who doesn't exist at all. She kept quiet and returned my stuff. The next few days she became rather unenthusiastic and didn't interact with me much at all… Fast forward a few weeks, Yesterday, she found out I said an absolute lie, and she got the hint that she could be my crush herself. Still, she came to ask me, plead me, beg me to tell her who that girl is. She even said "I'll trade my secrets with you. I'll tell you my current crush if you say yours". Actually, I'd rather not hear her crush because

Ah, screw it. Tell her.

Either man up and tell her.

Or get a grip.

If you don't tell her it's not going to go further, if you do, maybe she likes you too!
Either way, have a Dr Pepper, what's the worst that can happen?!

Grow a pair and tell her